Friction draft-rigging.



J. F. OCONNOR. FRIGTION DRAFT RIGMNG. APPLIGATvION FILED A' PatentedDeo. 9, 1913 Z SHEETS-SHEET 1.

J.- F. OGONNOR. PRIGTION DRAFT RIGGING.

APPLIATION FILED .AUG.4, 1909.

Patented Dec. 9, 1913.

2 SHEETS-SHEET 2.

JOHN r. oconnon,

OE" CHICAGO, ILLINOIS, 'lSSGlWL'JE7 BY MESNE ASSIGNMENTS, TG WILL-EAMMNER, 0F CHICAG, ILLNOIS.

E'RICTION DRAFT-BGGNG.

Specification of Letters Patent.

Application lei August 1969.

Patented Een.. 95 MHS,

ser-iai no, stress.

To aZZ whom it ymay concern:

lle it known thatl, loon l?. llonnoe, a citizen of the United States7residing; in Chicago, in thel county of (look and Stat-e ot' illinois,have invented a new and useful Improvement in Friction Draft-Rigging, ofwhich the following is specifi-cation.

My invention relates to improvements in friction draft rigging.

The object ot my invention is to provide a friction draft rigging of asimple, ctlicient and durable constructioln-which will have a. hightotal cushioning capacity, and in which the spring portion of the totalcushioning capacity will be relatively great (double `that in theordinarjyr constructions of friction draft rigging), and the frictionportion of the total cushioning` capacity will be relatively small inorder that the wear of the friction devices may be lessened, thedurability of the draft rigging as a whole correspondingly increased andthe etiiciency of the draft rigging also greatly improved both inresjeeet to its cushioning action and also in respect to certainty andreliability of release action after each cushioning movement or blow.

To practically accomplish this object or result, and herein my inventionconsistsa l combine with the draw-har, draft yoke and stop members.5 ands single irietien'cnshioning unit or mechanism, two parallel or twinarranged and simultaneously acting springs, thejriction cushioningdevices being directly in line with the draw-bar and the two twin orparallel springs being at the end, and one at each side of the aXls ofthe frictiondevices.

My invention 'further consists in the novel construction of parts anddevices and in the novel combinations of parts and devices herein shownand described and more paru ticularly set forth in the claims.

ln the accompanying drawing forming a part of this specification, Figurel isa side elevation, partly in longitudinal sec-trombi; a frictiondratft rigging' embodying rn invention. 2 is a. plan. view., rhorizontal section. a e cross/sections on lines 3-3 and f-4 o; l lrespectively. Fig. 5 is a front end of the `lriction shell and itsparts. Fig. b is a detail cross sectional View of the friction shell7showing certain parts in elevation.

pa rt1 i l i i l i l l Fig. 'i' a detail view of the central bearing'can through which the pressure of the springs transmitted to thefriction shoes.

8 a detail `view of the twin spring- 'sills or members of the car frameto which he draft rigging is applied, the same being preferably rolledsteel center sills, B the draw-har, B1 the draft yoke, C the draft lugsor stop members secured t0 the draft sills, D the front follower, D1 therear follower` preferably 'formed integral with the friction. shell', ll'l twin or 'parallel arranged springeach .preferably having smaller.'spring n# inside the saine, F alongitudinaliy movable friction shell, Gsegmental friction shoes within the shelli H a wedge and lllanti-friction rollers intnposed be 'tween the wedge and friction shoes.

he ,trietion'shell l1 has an internal cylindrie 'triction face f, insliding trictional con with the external friction faces g the segmentalfriction sh/oes G, which are l reerably three in number, and eachfnrnished with an inclined or wedge 'tace gli therewith to canse it toproperly tit between and be guided by the upright webs et the draftsills tcrnally a and giving the friction shell exgeneral rectangularshape. The

lower Dl.

fx" is' a intermediate L vtwin sprinjg` follower intcrposeo between thefront ends of the twin springs E E and the Sii rear ends of the frictionshoesG and against which the front ends of the springs directly act,this intermediate or supplemental follower being provided with a centralprojecting bearing g* to receive and act against the supplementalcentral cap or bearing member G2 which is provided withl 'wingsv orextensions g5 which act against the central bearing shoulders g6 of thefriction shoes G. By means of this intermediate twin sprin follower G1against which the twin or para lel springs act, one on each side of thecentral longitudinal line of the draw-bar and the central bearing cap G2which acts .cen-- trally against the several friction shoes, thepressure or tension vof the twin or parallel springs E E is transmittedequally Iand centrally to the several friction shoes.

The anti-friction? rollers H1 bear .against the central or middleportion of the friction shoes G and serve in connection with the wedge Hto transmit the'z pressure of the draw-bar centrally against ythefriction shoes," thus insuring proper bearing of the shoes against theshell from endl to end.

And as the friction shoes G also have on their inner faces centralbearing shoulders ,7 against which the central supplemental bearing capGr2 acts, the thrust or pressure of the twin springs E E is alsotransmitted centrally to the friction shoes.

The upper and lower integral longitudinal extensions F2 of theexternally rectangular and internally cylindric friction shell F arepreferably furnished at their rear portions with curved stiffening wallsf- Ywhich lit between and partially embrace the twin 1 is preferablyfurnished with cylindrically curved walls 97 forming laterally openpockets to receive `and partially'surround the springs.

' K is a removable tie-plate or guide vwhich is secured tothe draftsills by bolts 7c and which supports the draft rigging. 1

"M is a connecting rod having a head M1 at one end acting against thewedge` H andl a threaded nut K2, at the other end, which 'nation with adraw-bar, dra

pringsEE. -And the. twin. spring follower.

bears against the twin "spring follower G1.

I claim l. In a friction draft rigginv the combi.-

yoke and stop members, of a friction cushionin mechanism comprising` a:friction shell an friction shoes, two parallel simultaneously actingsprings, a twin spring follower between the springs and the frictionshoes, and a central' bearing cap interposed between said twin springfollower and said friction shoes, substantially as specified.

2. In a friction'draft rigging, the combination with a draw-bar, draftyoke and stop members, of a front follower, an externally rectangularfriction shell having aI central cylindric friction face, a rearfollower integral with said friction shell, longitudinal extensionsintegrally connecting said friction shell and rear follower, saidextensions being provided at the rear portion thereof with curvedlstiffening walls adapted to par tially embrace twin springs, frictionshoes within the yshell and simultaneously. acting twin springs,substantially' as specified.

3. In a friction draft rigging, the combination with a draw-bar, draftyoke and stop members, of a front follower, an externally rectangularfriction shell having a. central cylindric friction face, a rearfollower integral with said friction shell, longitudinal extensionsintegrally connecting said. friction shell and rear follower, saidextensions being provided at. theV rear portion thereof with, curvedstiffening walls adapted to a1'- itially embrace twin sprlngs, frictions oes4 within the' shell and simultaneously acting twin springs, and atwin spring followerl interposed betweenv thesprings and friction shoesand having laterally openjcurved pockets toreceive and partiallyembracethetwin springs, and a central bearing cap between said frictionshoes kand* said twin spring follower, substantially as specified.

. p JOHN F. OCONNOR. Vitnesses H. M. MUNDAY, PEARL ABRAMS.

